Home / 2,970.09-4,101.96-1,979.57

Finding the Fourth Proportional to 2,970.09, 4,101.96 and 1,979.57

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Solution

The fourth proportional to 2,970.09, 4,101.96 and 1,979.57 is: 2,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.09 : 4,101.96 = 1,979.57 : x
  2. Step 2: Convert to fraction form
    2,970.09/4,101.96 = 1,979.57/x
  3. Step 3: Cross multiply
    2,970.09x = 4,101.96 × 1,979.57
  4. Step 4: Simplify right side
    2,970.09x = 8,120,116.96
  5. Step 5: Solve for x
    x = 8,120,116.96/2,970.09
  6. Step 6: Final answer
    x = 2,733.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.